I am experiencing the same problem with a Java application I am writting. The application icon appears blurred. I tried using the same icon as Firefox, and it still appeared blurred. I attached a screenshot showing the two icons next to each other. In the screenshot, the first Firefox icon belongs to the browser; the second Firefox icon, just below it, belongs to the Java application. They both use the same PNG image, but the icon of the Java application appears blurred.
I think it is reasonable to consider the issue a Unity bug.
I am experiencing the same problem with a Java application I am writting. The application icon appears blurred. I tried using the same icon as Firefox, and it still appeared blurred. I attached a screenshot showing the two icons next to each other. In the screenshot, the first Firefox icon belongs to the browser; the second Firefox icon, just below it, belongs to the Java application. They both use the same PNG image, but the icon of the Java application appears blurred.
I think it is reasonable to consider the issue a Unity bug.